Table 2.

The scales of the List of Functional Abilities under two successive disability pension legislations: reliability (Cronbach's Alpha) and 95% confidence interval.

Scale (number of items)	Disability pension legislation WIA/time period 2005-2007 (N = 50,931)	Disability pension legislation WAO/time period 2003-2005 (N = 80,968)
Work stress (9)	0.856 (0.854-0.858)	0.827 (0.826-0.829)
No independence in performance (7)	0.727 (0.723-0.731)	0.724 (0.721-0.727)
Communication (6)	0.537 (0.530-0.543)	0.491 (0.485-0.496)
Taking initiative (3)	0.749 (0.745-0.753)	0.718 (0.715-0.721)
Social task demands (6)	0.800 (0.797-0.802)	0.766 (0.763-0.768)
Cognitive functioning (7)	0.791 (0.788-0.793)	0.757 (0.754-0.760
Acting efficiently (3)	0.592 (0.586-0.598)	0.635 (0.631-0.640)
Use of the legs (8)	0.924 (0.923-0.925)	0.914 (0.913-0.915)
Grip of the hand (5)	0.937 (0.936-0.937)	0.903 (0.902-0.904)
Use of the arms (7)	0.865 (0.864-0.867)	0.843 (0.842-0.845)
Posture of the trunk/back (3)	0.720 (0.716-0.725)	0.730 (0.727-0.733)
Use of the hand and fingers (7)	0.762 (0.759-0.766)	0.683 (0.680-0.687)
Use of the neck (2)	0.691 (0.686-0.697)	0.675 (0.670-0.679)
Movement of the trunk/back (4)	0.612 (0.606-0.617)	0.583 (0.578-0.588)
Working hours (2)	0.973 (0.972-0.973)	0.968 (0.968-0.969)